./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ce7b7e06b36a72b3de911fb70c1b245fd97c856ddcef7fa1f63b6ddc09812498 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:58:36,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:58:36,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:58:36,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:58:36,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:58:36,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:58:36,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:58:36,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:58:36,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:58:36,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:58:36,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:58:36,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:58:36,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:58:36,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:58:36,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:58:36,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:58:36,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:58:36,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:58:36,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:58:36,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:58:36,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:58:36,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:58:36,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:58:36,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:58:36,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:58:36,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:58:36,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:58:36,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:58:36,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:58:36,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:58:36,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:58:36,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:58:36,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:58:36,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:58:36,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:58:36,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:58:36,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:58:36,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:58:36,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:58:36,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:58:36,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:58:36,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:58:36,330 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:58:36,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:58:36,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:58:36,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:58:36,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:58:36,333 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:58:36,333 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:58:36,333 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:58:36,334 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:58:36,334 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:58:36,335 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:58:36,336 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:58:36,336 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:58:36,336 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:58:36,336 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:58:36,337 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:58:36,337 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:58:36,337 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:58:36,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:58:36,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:58:36,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:58:36,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:58:36,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:58:36,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:58:36,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:58:36,340 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:58:36,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:58:36,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:58:36,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:58:36,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:58:36,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:58:36,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:58:36,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:58:36,342 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:58:36,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:58:36,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:58:36,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:58:36,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:58:36,343 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce7b7e06b36a72b3de911fb70c1b245fd97c856ddcef7fa1f63b6ddc09812498 [2021-11-21 00:58:36,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:58:36,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:58:36,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:58:36,650 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:58:36,651 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:58:36,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-21 00:58:36,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/data/49a4305d3/84ae1f91164041208c36657a5a55227b/FLAG422801742 [2021-11-21 00:58:37,844 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:58:37,845 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-21 00:58:37,966 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/data/49a4305d3/84ae1f91164041208c36657a5a55227b/FLAG422801742 [2021-11-21 00:58:38,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/data/49a4305d3/84ae1f91164041208c36657a5a55227b [2021-11-21 00:58:38,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:58:38,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:58:38,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:58:38,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:58:38,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:58:38,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:58:38" (1/1) ... [2021-11-21 00:58:38,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca5ee2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:38, skipping insertion in model container [2021-11-21 00:58:38,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:58:38" (1/1) ... [2021-11-21 00:58:38,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:58:38,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:58:44,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493165,493178] [2021-11-21 00:58:44,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493334,493347] [2021-11-21 00:58:44,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493501,493514] [2021-11-21 00:58:44,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493669,493682] [2021-11-21 00:58:44,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:58:44,729 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:58:45,314 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493165,493178] [2021-11-21 00:58:45,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493334,493347] [2021-11-21 00:58:45,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493501,493514] [2021-11-21 00:58:45,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[493669,493682] [2021-11-21 00:58:45,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:58:45,847 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:58:45,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45 WrapperNode [2021-11-21 00:58:45,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:58:45,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:58:45,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:58:45,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:58:45,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45" (1/1) ... [2021-11-21 00:58:46,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45" (1/1) ... [2021-11-21 00:58:46,537 INFO L137 Inliner]: procedures = 688, calls = 4234, calls flagged for inlining = 342, calls inlined = 319, statements flattened = 10220 [2021-11-21 00:58:46,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:58:46,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:58:46,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:58:46,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:58:46,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45" (1/1) ... [2021-11-21 00:58:46,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45" (1/1) ... [2021-11-21 00:58:46,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45" (1/1) ... [2021-11-21 00:58:46,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45" (1/1) ... [2021-11-21 00:58:46,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45" (1/1) ... [2021-11-21 00:58:46,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45" (1/1) ... [2021-11-21 00:58:46,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45" (1/1) ... [2021-11-21 00:58:46,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:58:46,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:58:46,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:58:46,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:58:46,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45" (1/1) ... [2021-11-21 00:58:46,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:58:46,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:58:46,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:58:46,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46a42386-b127-4044-bcd4-dfd5d0206a85/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:58:47,016 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 00:58:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 00:58:47,017 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_read [2021-11-21 00:58:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_read [2021-11-21 00:58:47,017 INFO L130 BoogieDeclarations]: Found specification of procedure cas_pcs_link_check [2021-11-21 00:58:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_pcs_link_check [2021-11-21 00:58:47,018 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 00:58:47,018 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 00:58:47,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:58:47,018 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:58:47,018 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-21 00:58:47,018 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-21 00:58:47,019 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-21 00:58:47,019 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-21 00:58:47,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:58:47,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:58:47,019 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mii_link_check [2021-11-21 00:58:47,020 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mii_link_check [2021-11-21 00:58:47,020 INFO L130 BoogieDeclarations]: Found specification of procedure cas_calc_tabort [2021-11-21 00:58:47,020 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_calc_tabort [2021-11-21 00:58:47,020 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-21 00:58:47,020 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-21 00:58:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-11-21 00:58:47,021 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-11-21 00:58:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:58:47,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:58:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-21 00:58:47,021 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-21 00:58:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:58:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:58:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 00:58:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 00:58:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure cas_lock_tx [2021-11-21 00:58:47,023 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_lock_tx [2021-11-21 00:58:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 00:58:47,023 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 00:58:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:58:47,023 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:58:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure cas_disable_irq [2021-11-21 00:58:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_disable_irq [2021-11-21 00:58:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure cas_free_rxds [2021-11-21 00:58:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_free_rxds [2021-11-21 00:58:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2021-11-21 00:58:47,025 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2021-11-21 00:58:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure cas_open [2021-11-21 00:58:47,025 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_open [2021-11-21 00:58:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure cas_interrupt [2021-11-21 00:58:47,025 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_interrupt [2021-11-21 00:58:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_tiny_free [2021-11-21 00:58:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_tiny_free [2021-11-21 00:58:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-21 00:58:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-21 00:58:47,026 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_map [2021-11-21 00:58:47,026 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_map [2021-11-21 00:58:47,027 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_init [2021-11-21 00:58:47,027 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_init [2021-11-21 00:58:47,027 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-21 00:58:47,027 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-21 00:58:47,027 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size_set [2021-11-21 00:58:47,028 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size_set [2021-11-21 00:58:47,028 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:58:47,028 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:58:47,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:58:47,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:58:47,029 INFO L130 BoogieDeclarations]: Found specification of procedure cas_enable_irq [2021-11-21 00:58:47,029 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_enable_irq [2021-11-21 00:58:47,029 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:58:47,029 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:58:47,029 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 00:58:47,029 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 00:58:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_dequeue [2021-11-21 00:58:47,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_dequeue [2021-11-21 00:58:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-21 00:58:47,030 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-21 00:58:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:58:47,031 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:58:47,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:58:47,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:58:47,031 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:58:47,031 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:58:47,032 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 00:58:47,032 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 00:58:47,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:58:47,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_108 [2021-11-21 00:58:47,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_108 [2021-11-21 00:58:47,032 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-21 00:58:47,033 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-21 00:58:47,033 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_multicast [2021-11-21 00:58:47,033 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_multicast [2021-11-21 00:58:47,033 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-21 00:58:47,033 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-21 00:58:47,034 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 00:58:47,034 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 00:58:47,034 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_free [2021-11-21 00:58:47,034 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_free [2021-11-21 00:58:47,034 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_timeout [2021-11-21 00:58:47,035 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_timeout [2021-11-21 00:58:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:58:47,035 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:58:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_pcs_link_mode [2021-11-21 00:58:47,035 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_pcs_link_mode [2021-11-21 00:58:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 00:58:47,036 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 00:58:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:58:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure cas_close [2021-11-21 00:58:47,036 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_close [2021-11-21 00:58:47,037 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_swap [2021-11-21 00:58:47,037 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_swap [2021-11-21 00:58:47,037 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:58:47,037 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:58:47,037 INFO L130 BoogieDeclarations]: Found specification of procedure cas_netpoll [2021-11-21 00:58:47,037 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_netpoll [2021-11-21 00:58:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure cas_hard_reset [2021-11-21 00:58:47,038 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_hard_reset [2021-11-21 00:58:47,038 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 00:58:47,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 00:58:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:58:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:58:47,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:58:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure cas_rxc_init [2021-11-21 00:58:47,039 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_rxc_init [2021-11-21 00:58:47,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:58:47,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:58:47,040 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:58:47,040 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clear_mac_err [2021-11-21 00:58:47,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clear_mac_err [2021-11-21 00:58:47,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 00:58:47,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 00:58:47,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:58:47,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:58:47,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:58:47,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:58:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-21 00:58:47,042 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-21 00:58:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure cas_remove_one [2021-11-21 00:58:47,042 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_remove_one [2021-11-21 00:58:47,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_NOT_ARG_SIGN [2021-11-21 00:58:47,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_NOT_ARG_SIGN [2021-11-21 00:58:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 00:58:47,043 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 00:58:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:58:47,043 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:58:47,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:58:47,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:58:47,044 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-21 00:58:47,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-21 00:58:47,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:58:47,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:58:47,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:58:47,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:58:47,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:58:47,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 00:58:47,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 00:58:47,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:58:47,045 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_init [2021-11-21 00:58:47,046 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_init [2021-11-21 00:58:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:58:47,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:58:47,046 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:58:47,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:58:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:58:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:58:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:58:47,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:58:47,047 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_link_modes [2021-11-21 00:58:47,047 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_link_modes [2021-11-21 00:58:47,048 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_mii_link_mode [2021-11-21 00:58:47,048 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_mii_link_mode [2021-11-21 00:58:47,048 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2021-11-21 00:58:47,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2021-11-21 00:58:47,048 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 00:58:47,049 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 00:58:47,049 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:58:47,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:58:47,049 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-21 00:58:47,049 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-21 00:58:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2021-11-21 00:58:47,050 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2021-11-21 00:58:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 00:58:47,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 00:58:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:58:47,050 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:58:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 00:58:47,051 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 00:58:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:58:47,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:58:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure csum_unfold [2021-11-21 00:58:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_unfold [2021-11-21 00:58:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 00:58:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 00:58:47,052 INFO L130 BoogieDeclarations]: Found specification of procedure cas_entropy_gather [2021-11-21 00:58:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_entropy_gather [2021-11-21 00:58:47,053 INFO L130 BoogieDeclarations]: Found specification of procedure cas_resume [2021-11-21 00:58:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_resume [2021-11-21 00:58:47,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:58:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:58:47,053 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_alloc [2021-11-21 00:58:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_alloc [2021-11-21 00:58:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:58:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:58:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:58:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:58:47,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:58:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:58:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 00:58:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 00:58:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mif_poll [2021-11-21 00:58:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mif_poll [2021-11-21 00:58:47,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 00:58:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 00:58:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure cas_unlock_tx [2021-11-21 00:58:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_unlock_tx [2021-11-21 00:58:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 00:58:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 00:58:47,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_133 [2021-11-21 00:58:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_133 [2021-11-21 00:58:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice [2021-11-21 00:58:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice [2021-11-21 00:58:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_135 [2021-11-21 00:58:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_135 [2021-11-21 00:58:47,057 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-21 00:58:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-21 00:58:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2021-11-21 00:58:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2021-11-21 00:58:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 00:58:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 00:58:47,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:58:47,059 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:58:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:58:47,059 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:58:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 00:58:47,059 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 00:58:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_buf [2021-11-21 00:58:47,060 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_buf [2021-11-21 00:58:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mac_reset [2021-11-21 00:58:47,060 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mac_reset [2021-11-21 00:58:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_cas [2021-11-21 00:58:47,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_cas [2021-11-21 00:58:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:58:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:58:47,061 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:58:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_set_page [2021-11-21 00:58:47,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_set_page [2021-11-21 00:58:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:58:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_regs_len [2021-11-21 00:58:47,062 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_regs_len [2021-11-21 00:58:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure cas_reset [2021-11-21 00:58:47,062 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_reset [2021-11-21 00:58:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_NOT_ARG_SIGN [2021-11-21 00:58:47,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_NOT_ARG_SIGN [2021-11-21 00:58:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-21 00:58:47,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-21 00:58:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_page [2021-11-21 00:58:47,063 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_page [2021-11-21 00:58:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:58:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-21 00:58:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-21 00:58:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure cas_nway_reset [2021-11-21 00:58:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_nway_reset [2021-11-21 00:58:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 00:58:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 00:58:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:58:47,065 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:58:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:58:47,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:58:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure cas_setup_multicast [2021-11-21 00:58:47,066 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_setup_multicast [2021-11-21 00:58:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_powerdown [2021-11-21 00:58:47,066 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_powerdown [2021-11-21 00:58:47,067 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_rxds_ringN [2021-11-21 00:58:47,067 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_rxds_ringN [2021-11-21 00:58:47,067 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-21 00:58:47,067 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-21 00:58:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure cas_vpd_match [2021-11-21 00:58:47,068 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_vpd_match [2021-11-21 00:58:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_83 [2021-11-21 00:58:47,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_83 [2021-11-21 00:58:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_81 [2021-11-21 00:58:47,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_81 [2021-11-21 00:58:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 00:58:47,068 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 00:58:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2021-11-21 00:58:47,069 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2021-11-21 00:58:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:58:47,069 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:58:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure page_count [2021-11-21 00:58:47,069 INFO L138 BoogieDeclarations]: Found implementation of procedure page_count [2021-11-21 00:58:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:58:47,069 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:58:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2021-11-21 00:58:47,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2021-11-21 00:58:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure cas_shutdown [2021-11-21 00:58:47,070 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_shutdown [2021-11-21 00:58:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure cas_begin_auto_negotiation [2021-11-21 00:58:47,070 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_begin_auto_negotiation [2021-11-21 00:58:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-21 00:58:47,070 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-21 00:58:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:58:47,071 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:58:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure cas_write_txd [2021-11-21 00:58:47,071 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_write_txd [2021-11-21 00:58:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:58:47,071 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:58:47,071 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_ref [2021-11-21 00:58:47,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_ref [2021-11-21 00:58:47,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:58:47,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:58:47,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:58:47,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_82 [2021-11-21 00:58:47,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_82 [2021-11-21 00:58:47,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_84 [2021-11-21 00:58:47,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_84 [2021-11-21 00:58:47,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_79 [2021-11-21 00:58:47,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_79 [2021-11-21 00:58:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 00:58:47,073 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 00:58:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure cas_init_hw [2021-11-21 00:58:47,073 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_init_hw [2021-11-21 00:58:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clean_rings [2021-11-21 00:58:47,073 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clean_rings [2021-11-21 00:58:47,073 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_free [2021-11-21 00:58:47,074 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_free [2021-11-21 00:58:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-21 00:58:47,074 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-21 00:58:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_write [2021-11-21 00:58:47,074 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_write [2021-11-21 00:58:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:58:47,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:58:47,074 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 00:58:47,075 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 00:58:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 00:58:47,075 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 00:58:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_recover [2021-11-21 00:58:47,075 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_recover [2021-11-21 00:58:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2021-11-21 00:58:47,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2021-11-21 00:58:47,075 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 00:58:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 00:58:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_stats [2021-11-21 00:58:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_stats [2021-11-21 00:58:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 00:58:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 00:58:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2021-11-21 00:58:47,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2021-11-21 00:58:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:58:47,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:58:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:58:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-21 00:58:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-21 00:58:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-21 00:58:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-21 00:58:47,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_107 [2021-11-21 00:58:47,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_107 [2021-11-21 00:58:48,523 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:58:48,528 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:58:48,959 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:02:59,156 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:02:59,375 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:03:03,069 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:03:03,070 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 01:03:03,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:03:03 BoogieIcfgContainer [2021-11-21 01:03:03,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:03:03,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:03:03,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:03:03,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:03:03,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:58:38" (1/3) ... [2021-11-21 01:03:03,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4e6c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:03:03, skipping insertion in model container [2021-11-21 01:03:03,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:58:45" (2/3) ... [2021-11-21 01:03:03,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4e6c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:03:03, skipping insertion in model container [2021-11-21 01:03:03,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:03:03" (3/3) ... [2021-11-21 01:03:03,091 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-21 01:03:03,102 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:03:03,102 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:03:03,181 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:03:03,189 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:03:03,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:03:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 2916 states, 1656 states have (on average 1.2765700483091786) internal successors, (2114), 1726 states have internal predecessors, (2114), 1091 states have call successors, (1091), 168 states have call predecessors, (1091), 167 states have return successors, (1086), 1074 states have call predecessors, (1086), 1086 states have call successors, (1086) [2021-11-21 01:03:03,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-21 01:03:03,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:03,303 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:03,304 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:03:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:03,316 INFO L85 PathProgramCache]: Analyzing trace with hash 288822799, now seen corresponding path program 1 times [2021-11-21 01:03:03,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:03,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351659067] [2021-11-21 01:03:03,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:03,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-21 01:03:04,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:04,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351659067] [2021-11-21 01:03:04,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351659067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:04,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:04,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:03:04,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560943125] [2021-11-21 01:03:04,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:04,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:03:04,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:04,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:03:04,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:03:04,574 INFO L87 Difference]: Start difference. First operand has 2916 states, 1656 states have (on average 1.2765700483091786) internal successors, (2114), 1726 states have internal predecessors, (2114), 1091 states have call successors, (1091), 168 states have call predecessors, (1091), 167 states have return successors, (1086), 1074 states have call predecessors, (1086), 1086 states have call successors, (1086) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:03:06,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:03:13,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:13,880 INFO L93 Difference]: Finished difference Result 8626 states and 13064 transitions. [2021-11-21 01:03:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:03:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 137 [2021-11-21 01:03:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:13,953 INFO L225 Difference]: With dead ends: 8626 [2021-11-21 01:03:13,954 INFO L226 Difference]: Without dead ends: 5725 [2021-11-21 01:03:13,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:03:13,992 INFO L933 BasicCegarLoop]: 5034 mSDtfsCounter, 4172 mSDsluCounter, 4246 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 8845 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:13,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4172 Valid, 8845 Invalid, 903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 899 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2021-11-21 01:03:14,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2021-11-21 01:03:14,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 5721. [2021-11-21 01:03:14,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5721 states, 3261 states have (on average 1.2744556884391292) internal successors, (4156), 3397 states have internal predecessors, (4156), 2126 states have call successors, (2126), 332 states have call predecessors, (2126), 331 states have return successors, (2123), 2099 states have call predecessors, (2123), 2123 states have call successors, (2123) [2021-11-21 01:03:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 8405 transitions. [2021-11-21 01:03:14,575 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 8405 transitions. Word has length 137 [2021-11-21 01:03:14,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:14,576 INFO L470 AbstractCegarLoop]: Abstraction has 5721 states and 8405 transitions. [2021-11-21 01:03:14,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:03:14,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 8405 transitions. [2021-11-21 01:03:14,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-21 01:03:14,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:14,581 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:14,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:03:14,582 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:03:14,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:14,583 INFO L85 PathProgramCache]: Analyzing trace with hash -235814926, now seen corresponding path program 1 times [2021-11-21 01:03:14,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:14,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979132611] [2021-11-21 01:03:14,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:14,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-21 01:03:15,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:15,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979132611] [2021-11-21 01:03:15,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979132611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:15,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:15,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:03:15,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999047370] [2021-11-21 01:03:15,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:15,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:03:15,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:15,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:03:15,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:03:15,073 INFO L87 Difference]: Start difference. First operand 5721 states and 8405 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:03:17,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:03:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:24,310 INFO L93 Difference]: Finished difference Result 16943 states and 24925 transitions. [2021-11-21 01:03:24,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:03:24,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 142 [2021-11-21 01:03:24,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:24,422 INFO L225 Difference]: With dead ends: 16943 [2021-11-21 01:03:24,423 INFO L226 Difference]: Without dead ends: 11247 [2021-11-21 01:03:24,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:03:24,468 INFO L933 BasicCegarLoop]: 4885 mSDtfsCounter, 4108 mSDsluCounter, 4256 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 8705 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:24,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4108 Valid, 8705 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 885 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2021-11-21 01:03:24,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11247 states. [2021-11-21 01:03:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11247 to 11211. [2021-11-21 01:03:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11211 states, 6406 states have (on average 1.2736497034030596) internal successors, (8159), 6672 states have internal predecessors, (8159), 4143 states have call successors, (4143), 662 states have call predecessors, (4143), 659 states have return successors, (4202), 4080 states have call predecessors, (4202), 4140 states have call successors, (4202) [2021-11-21 01:03:25,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11211 states to 11211 states and 16504 transitions. [2021-11-21 01:03:25,306 INFO L78 Accepts]: Start accepts. Automaton has 11211 states and 16504 transitions. Word has length 142 [2021-11-21 01:03:25,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:25,308 INFO L470 AbstractCegarLoop]: Abstraction has 11211 states and 16504 transitions. [2021-11-21 01:03:25,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:03:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 11211 states and 16504 transitions. [2021-11-21 01:03:25,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-21 01:03:25,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:25,315 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:25,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:03:25,315 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:03:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:25,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1714960767, now seen corresponding path program 1 times [2021-11-21 01:03:25,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:25,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905568882] [2021-11-21 01:03:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:25,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-21 01:03:25,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:25,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905568882] [2021-11-21 01:03:25,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905568882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:25,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:25,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:03:25,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321010511] [2021-11-21 01:03:25,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:25,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:03:25,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:25,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:03:25,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:03:25,831 INFO L87 Difference]: Start difference. First operand 11211 states and 16504 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:03:27,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:03:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:34,291 INFO L93 Difference]: Finished difference Result 32183 states and 47238 transitions. [2021-11-21 01:03:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:03:34,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 146 [2021-11-21 01:03:34,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:34,449 INFO L225 Difference]: With dead ends: 32183 [2021-11-21 01:03:34,450 INFO L226 Difference]: Without dead ends: 20997 [2021-11-21 01:03:34,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:03:34,515 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 3692 mSDsluCounter, 4157 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3692 SdHoareTripleChecker+Valid, 8513 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:34,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3692 Valid, 8513 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 926 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-21 01:03:34,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20997 states. [2021-11-21 01:03:35,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20997 to 20957. [2021-11-21 01:03:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20957 states, 11980 states have (on average 1.267195325542571) internal successors, (15181), 12474 states have internal predecessors, (15181), 7693 states have call successors, (7693), 1286 states have call predecessors, (7693), 1281 states have return successors, (7822), 7578 states have call predecessors, (7822), 7690 states have call successors, (7822) [2021-11-21 01:03:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20957 states to 20957 states and 30696 transitions. [2021-11-21 01:03:35,965 INFO L78 Accepts]: Start accepts. Automaton has 20957 states and 30696 transitions. Word has length 146 [2021-11-21 01:03:35,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:35,966 INFO L470 AbstractCegarLoop]: Abstraction has 20957 states and 30696 transitions. [2021-11-21 01:03:35,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:03:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 20957 states and 30696 transitions. [2021-11-21 01:03:35,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-21 01:03:35,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:35,973 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:35,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:03:35,974 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:03:35,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:35,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1877446515, now seen corresponding path program 1 times [2021-11-21 01:03:35,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:35,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283920734] [2021-11-21 01:03:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:35,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-21 01:03:36,469 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:36,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283920734] [2021-11-21 01:03:36,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283920734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:36,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:36,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:03:36,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893757599] [2021-11-21 01:03:36,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:36,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:03:36,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:03:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:03:36,472 INFO L87 Difference]: Start difference. First operand 20957 states and 30696 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:03:38,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:03:45,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:45,706 INFO L93 Difference]: Finished difference Result 39136 states and 56916 transitions. [2021-11-21 01:03:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:03:45,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 151 [2021-11-21 01:03:45,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:45,819 INFO L225 Difference]: With dead ends: 39136 [2021-11-21 01:03:45,819 INFO L226 Difference]: Without dead ends: 18204 [2021-11-21 01:03:45,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:03:45,928 INFO L933 BasicCegarLoop]: 5086 mSDtfsCounter, 2448 mSDsluCounter, 4214 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 8872 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:45,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2448 Valid, 8872 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1057 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-21 01:03:45,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18204 states. [2021-11-21 01:03:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18204 to 18169. [2021-11-21 01:03:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18169 states, 10492 states have (on average 1.2646778497903164) internal successors, (13269), 10929 states have internal predecessors, (13269), 6383 states have call successors, (6383), 1294 states have call predecessors, (6383), 1291 states have return successors, (6465), 6286 states have call predecessors, (6465), 6380 states have call successors, (6465) [2021-11-21 01:03:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18169 states to 18169 states and 26117 transitions. [2021-11-21 01:03:47,358 INFO L78 Accepts]: Start accepts. Automaton has 18169 states and 26117 transitions. Word has length 151 [2021-11-21 01:03:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:47,360 INFO L470 AbstractCegarLoop]: Abstraction has 18169 states and 26117 transitions. [2021-11-21 01:03:47,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 01:03:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 18169 states and 26117 transitions. [2021-11-21 01:03:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-21 01:03:47,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:47,364 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:47,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:03:47,365 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:03:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:47,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1449430356, now seen corresponding path program 1 times [2021-11-21 01:03:47,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:47,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275227034] [2021-11-21 01:03:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:47,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:03:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-21 01:03:47,990 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:03:47,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275227034] [2021-11-21 01:03:47,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275227034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:03:47,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:03:47,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:03:47,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543249043] [2021-11-21 01:03:47,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:03:47,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:03:47,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:03:47,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:03:47,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:03:47,992 INFO L87 Difference]: Start difference. First operand 18169 states and 26117 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 01:03:50,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:03:56,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:03:56,894 INFO L93 Difference]: Finished difference Result 48716 states and 70299 transitions. [2021-11-21 01:03:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:03:56,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 154 [2021-11-21 01:03:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:03:57,119 INFO L225 Difference]: With dead ends: 48716 [2021-11-21 01:03:57,120 INFO L226 Difference]: Without dead ends: 30572 [2021-11-21 01:03:57,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:03:57,230 INFO L933 BasicCegarLoop]: 5068 mSDtfsCounter, 4201 mSDsluCounter, 4205 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 8842 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:03:57,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4201 Valid, 8842 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 901 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-21 01:03:57,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30572 states. [2021-11-21 01:03:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30572 to 30532. [2021-11-21 01:03:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30532 states, 17605 states have (on average 1.2648679352456689) internal successors, (22268), 18346 states have internal predecessors, (22268), 10849 states have call successors, (10849), 2084 states have call predecessors, (10849), 2075 states have return successors, (11020), 10658 states have call predecessors, (11020), 10846 states have call successors, (11020) [2021-11-21 01:03:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30532 states to 30532 states and 44137 transitions. [2021-11-21 01:03:59,408 INFO L78 Accepts]: Start accepts. Automaton has 30532 states and 44137 transitions. Word has length 154 [2021-11-21 01:03:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:03:59,409 INFO L470 AbstractCegarLoop]: Abstraction has 30532 states and 44137 transitions. [2021-11-21 01:03:59,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 01:03:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 30532 states and 44137 transitions. [2021-11-21 01:03:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-21 01:03:59,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:03:59,413 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:03:59,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:03:59,413 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:03:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:03:59,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1986518457, now seen corresponding path program 1 times [2021-11-21 01:03:59,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:03:59,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288646413] [2021-11-21 01:03:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:03:59,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:03:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-21 01:04:00,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:00,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288646413] [2021-11-21 01:04:00,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288646413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:00,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:00,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:04:00,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235100181] [2021-11-21 01:04:00,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:00,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:04:00,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:04:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:04:00,297 INFO L87 Difference]: Start difference. First operand 30532 states and 44137 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:04:02,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:04:14,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:14,615 INFO L93 Difference]: Finished difference Result 56215 states and 81229 transitions. [2021-11-21 01:04:14,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:04:14,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 175 [2021-11-21 01:04:14,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:15,107 INFO L225 Difference]: With dead ends: 56215 [2021-11-21 01:04:15,108 INFO L226 Difference]: Without dead ends: 56213 [2021-11-21 01:04:15,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:04:15,154 INFO L933 BasicCegarLoop]: 4714 mSDtfsCounter, 4040 mSDsluCounter, 13880 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4058 SdHoareTripleChecker+Valid, 17297 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:15,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4058 Valid, 17297 Invalid, 1781 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1776 Invalid, 1 Unknown, 0 Unchecked, 12.8s Time] [2021-11-21 01:04:15,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56213 states. [2021-11-21 01:04:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56213 to 56177. [2021-11-21 01:04:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56177 states, 32434 states have (on average 1.2666337793673306) internal successors, (41082), 33918 states have internal predecessors, (41082), 19801 states have call successors, (19801), 4049 states have call predecessors, (19801), 3939 states have return successors, (20311), 19168 states have call predecessors, (20311), 19795 states have call successors, (20311) [2021-11-21 01:04:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56177 states to 56177 states and 81194 transitions. [2021-11-21 01:04:18,411 INFO L78 Accepts]: Start accepts. Automaton has 56177 states and 81194 transitions. Word has length 175 [2021-11-21 01:04:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:18,412 INFO L470 AbstractCegarLoop]: Abstraction has 56177 states and 81194 transitions. [2021-11-21 01:04:18,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-21 01:04:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 56177 states and 81194 transitions. [2021-11-21 01:04:18,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-21 01:04:18,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:18,416 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:18,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:04:18,416 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1616917179, now seen corresponding path program 1 times [2021-11-21 01:04:18,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:18,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092826394] [2021-11-21 01:04:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:18,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-21 01:04:18,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:18,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092826394] [2021-11-21 01:04:18,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092826394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:18,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:18,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:04:18,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114241836] [2021-11-21 01:04:18,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:18,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:04:18,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:18,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:04:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:04:18,951 INFO L87 Difference]: Start difference. First operand 56177 states and 81194 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 01:04:21,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:04:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:31,151 INFO L93 Difference]: Finished difference Result 56187 states and 81203 transitions. [2021-11-21 01:04:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:04:31,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 180 [2021-11-21 01:04:31,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:31,357 INFO L225 Difference]: With dead ends: 56187 [2021-11-21 01:04:31,357 INFO L226 Difference]: Without dead ends: 56185 [2021-11-21 01:04:31,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:04:31,380 INFO L933 BasicCegarLoop]: 3821 mSDtfsCounter, 4202 mSDsluCounter, 8498 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 11437 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:31,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4219 Valid, 11437 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1349 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2021-11-21 01:04:31,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56185 states. [2021-11-21 01:04:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56185 to 56185. [2021-11-21 01:04:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56185 states, 32440 states have (on average 1.2665844636251542) internal successors, (41088), 33924 states have internal predecessors, (41088), 19801 states have call successors, (19801), 4051 states have call predecessors, (19801), 3941 states have return successors, (20311), 19168 states have call predecessors, (20311), 19795 states have call successors, (20311) [2021-11-21 01:04:34,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56185 states to 56185 states and 81200 transitions. [2021-11-21 01:04:34,251 INFO L78 Accepts]: Start accepts. Automaton has 56185 states and 81200 transitions. Word has length 180 [2021-11-21 01:04:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:34,252 INFO L470 AbstractCegarLoop]: Abstraction has 56185 states and 81200 transitions. [2021-11-21 01:04:34,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-21 01:04:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 56185 states and 81200 transitions. [2021-11-21 01:04:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-21 01:04:34,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:34,272 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:34,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:04:34,272 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1054332205, now seen corresponding path program 1 times [2021-11-21 01:04:34,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:34,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227814970] [2021-11-21 01:04:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:34,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-11-21 01:04:34,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:34,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227814970] [2021-11-21 01:04:34,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227814970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:34,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:34,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:04:34,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104348658] [2021-11-21 01:04:34,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:34,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:04:34,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:34,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:04:34,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:04:34,890 INFO L87 Difference]: Start difference. First operand 56185 states and 81200 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:04:37,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:04:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:04:46,959 INFO L93 Difference]: Finished difference Result 56195 states and 81209 transitions. [2021-11-21 01:04:46,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:04:46,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 194 [2021-11-21 01:04:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:04:47,148 INFO L225 Difference]: With dead ends: 56195 [2021-11-21 01:04:47,148 INFO L226 Difference]: Without dead ends: 56193 [2021-11-21 01:04:47,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:04:47,173 INFO L933 BasicCegarLoop]: 3821 mSDtfsCounter, 4198 mSDsluCounter, 8498 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4214 SdHoareTripleChecker+Valid, 11437 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:04:47,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4214 Valid, 11437 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1349 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2021-11-21 01:04:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56193 states. [2021-11-21 01:04:49,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56193 to 56193. [2021-11-21 01:04:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56193 states, 32446 states have (on average 1.2665351661221722) internal successors, (41094), 33930 states have internal predecessors, (41094), 19801 states have call successors, (19801), 4053 states have call predecessors, (19801), 3943 states have return successors, (20311), 19168 states have call predecessors, (20311), 19795 states have call successors, (20311) [2021-11-21 01:04:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56193 states to 56193 states and 81206 transitions. [2021-11-21 01:04:49,834 INFO L78 Accepts]: Start accepts. Automaton has 56193 states and 81206 transitions. Word has length 194 [2021-11-21 01:04:49,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:04:49,836 INFO L470 AbstractCegarLoop]: Abstraction has 56193 states and 81206 transitions. [2021-11-21 01:04:49,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:04:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 56193 states and 81206 transitions. [2021-11-21 01:04:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-21 01:04:49,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:04:49,841 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:04:49,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:04:49,842 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:04:49,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:04:49,842 INFO L85 PathProgramCache]: Analyzing trace with hash 129928657, now seen corresponding path program 1 times [2021-11-21 01:04:49,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:04:49,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182198395] [2021-11-21 01:04:49,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:04:49,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:04:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:04:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-11-21 01:04:50,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:04:50,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182198395] [2021-11-21 01:04:50,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182198395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:04:50,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:04:50,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:04:50,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946803628] [2021-11-21 01:04:50,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:04:50,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:04:50,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:04:50,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:04:50,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:04:50,388 INFO L87 Difference]: Start difference. First operand 56193 states and 81206 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 01:04:52,500 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:05:02,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:05:02,199 INFO L93 Difference]: Finished difference Result 56203 states and 81215 transitions. [2021-11-21 01:05:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:05:02,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 199 [2021-11-21 01:05:02,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:05:02,562 INFO L225 Difference]: With dead ends: 56203 [2021-11-21 01:05:02,563 INFO L226 Difference]: Without dead ends: 56201 [2021-11-21 01:05:02,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:05:02,580 INFO L933 BasicCegarLoop]: 3821 mSDtfsCounter, 4198 mSDsluCounter, 8498 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4213 SdHoareTripleChecker+Valid, 11437 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:05:02,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4213 Valid, 11437 Invalid, 1351 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 1349 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-11-21 01:05:02,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56201 states. [2021-11-21 01:05:04,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56201 to 56201. [2021-11-21 01:05:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56201 states, 32452 states have (on average 1.2664858868482682) internal successors, (41100), 33936 states have internal predecessors, (41100), 19801 states have call successors, (19801), 4055 states have call predecessors, (19801), 3945 states have return successors, (20311), 19168 states have call predecessors, (20311), 19795 states have call successors, (20311) [2021-11-21 01:05:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56201 states to 56201 states and 81212 transitions. [2021-11-21 01:05:05,177 INFO L78 Accepts]: Start accepts. Automaton has 56201 states and 81212 transitions. Word has length 199 [2021-11-21 01:05:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:05:05,178 INFO L470 AbstractCegarLoop]: Abstraction has 56201 states and 81212 transitions. [2021-11-21 01:05:05,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-21 01:05:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 56201 states and 81212 transitions. [2021-11-21 01:05:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-21 01:05:05,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:05:05,183 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:05:05,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:05:05,184 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:05:05,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:05:05,184 INFO L85 PathProgramCache]: Analyzing trace with hash 160818506, now seen corresponding path program 1 times [2021-11-21 01:05:05,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:05:05,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847287383] [2021-11-21 01:05:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:05:05,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:05:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:05:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2021-11-21 01:05:05,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:05:05,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847287383] [2021-11-21 01:05:05,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847287383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:05:05,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:05:05,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:05:05,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182421800] [2021-11-21 01:05:05,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:05:05,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:05:05,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:05:05,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:05:05,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:05:05,586 INFO L87 Difference]: Start difference. First operand 56201 states and 81212 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 01:05:07,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:05:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:05:18,397 INFO L93 Difference]: Finished difference Result 130599 states and 188316 transitions. [2021-11-21 01:05:18,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:05:18,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 194 [2021-11-21 01:05:18,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:05:18,704 INFO L225 Difference]: With dead ends: 130599 [2021-11-21 01:05:18,704 INFO L226 Difference]: Without dead ends: 74461 [2021-11-21 01:05:18,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:05:18,880 INFO L933 BasicCegarLoop]: 5918 mSDtfsCounter, 2448 mSDsluCounter, 4207 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 9697 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:05:18,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2448 Valid, 9697 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1229 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-11-21 01:05:19,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74461 states. [2021-11-21 01:05:22,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74461 to 74361. [2021-11-21 01:05:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74361 states, 43100 states have (on average 1.2664965197215776) internal successors, (54586), 45056 states have internal predecessors, (54586), 25819 states have call successors, (25819), 5581 states have call predecessors, (25819), 5439 states have return successors, (26413), 24994 states have call predecessors, (26413), 25813 states have call successors, (26413) [2021-11-21 01:05:22,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74361 states to 74361 states and 106818 transitions. [2021-11-21 01:05:22,545 INFO L78 Accepts]: Start accepts. Automaton has 74361 states and 106818 transitions. Word has length 194 [2021-11-21 01:05:22,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:05:22,546 INFO L470 AbstractCegarLoop]: Abstraction has 74361 states and 106818 transitions. [2021-11-21 01:05:22,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 01:05:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 74361 states and 106818 transitions. [2021-11-21 01:05:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-21 01:05:22,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:05:22,551 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:05:22,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:05:22,551 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:05:22,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:05:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash 740908089, now seen corresponding path program 1 times [2021-11-21 01:05:22,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:05:22,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519235428] [2021-11-21 01:05:22,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:05:22,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:05:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:05:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2021-11-21 01:05:23,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:05:23,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519235428] [2021-11-21 01:05:23,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519235428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:05:23,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:05:23,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:05:23,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301830134] [2021-11-21 01:05:23,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:05:23,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:05:23,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:05:23,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:05:23,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:05:23,039 INFO L87 Difference]: Start difference. First operand 74361 states and 106818 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:05:25,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:05:35,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:05:35,776 INFO L93 Difference]: Finished difference Result 74371 states and 106827 transitions. [2021-11-21 01:05:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:05:35,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 195 [2021-11-21 01:05:35,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:05:36,073 INFO L225 Difference]: With dead ends: 74371 [2021-11-21 01:05:36,074 INFO L226 Difference]: Without dead ends: 74369 [2021-11-21 01:05:36,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:05:36,107 INFO L933 BasicCegarLoop]: 3821 mSDtfsCounter, 4202 mSDsluCounter, 8498 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 11437 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:05:36,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4216 Valid, 11437 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1349 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2021-11-21 01:05:36,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74369 states.